Liquid compositions based on polyglycolethers having a high boil

Details Liquid compositions based on polyglycolethers having a high boil Liquid compositions based on polyglycolethers having a high boil

1974-02-28

1978-09-19

Pitlick, Harris A.

Compositions

Heat-exchange, low-freezing or pour point, or high boiling...

Organic components

260 61B, C10M 316, C10M 314

Patent

active

041152913

ABSTRACT:
A process is disclosed for the preparation of monoalkyl ethers of polyoxyalkyleneglycols having a boiling point greater than 290.degree. C and suitable for use as a hydraulic brake fluid, wherein a mixture of ethylene oxide and propylene oxide is reacted in an anhydrous alkaline medium, and at elevated temperatures and with a monoalkylether of diethylene glycol, in a preferred weight ratio oxides/glycol-ether comprised between 1.2 and 1.8. Preferably, the monoalkylether of diethylene glycol is the monomethylether which may contain a small amount of monoethylene glycol. The reaction product may be adjusted as regards viscosity by dilution with a minor amount of an alkoxy triglycol, e.g., butoxy triethyleneglycol.

REFERENCES:
patent: 2425755 (1947-08-01), Roberts et al.
patent: 3062747 (1962-11-01), Fife et al.
patent: 3324035 (1967-06-01), Nankee et al.
patent: 3472781 (1969-10-01), Ziemba

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